Service clock recovery for variable bit rate services

Details Service clock recovery for variable bit rate services Service clock recovery for variable bit rate services

1992-03-06

1993-04-20

Kuntz, Curtis

Pulse or digital communications

Spread spectrum

Direct sequence

375120, 370 941, 370 942, 3701001, H04J 306

Patent

active

052048829

ABSTRACT:
To recover the service clock of a variable bit rate source (170) which generates data at a rate which is not proportional to a service clock (76), timing cells are generated. The timing cells are generated at a rate which is proportional to the service clock (76). The timing cells and data are transmitted via a network (100). At the receive-end, the data is stored in a buffer (82). A phase locked loop (90') generates a local clock signal in the form of a read signal which controls the rate at which the received data is read out of the buffer (82). The read signal produced by the phase locked loop (90') is proportional to the average rate at which timing cells are received at the receive-end. In this manner the signal which reads the data out of the buffer (82) at the receive-end approaches the service clock (76) at the source end.

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